#region Using Directives and Copyright Notice

// Copyright (c) 2007-2010, Computer Consultancy Pty Ltd
// All rights reserved.
// 
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//     * Redistributions of source code must retain the above copyright
//       notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above copyright
//       notice, this list of conditions and the following disclaimer in the
//       documentation and/or other materials provided with the distribution.
//     * Neither the name of the Computer Consultancy Pty Ltd nor the
//       names of its contributors may be used to endorse or promote products
//       derived from this software without specific prior written permission.
// 
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
// ARE DISCLAIMED. IN NO EVENT SHALL COMPUTER CONSULTANCY PTY LTD BE LIABLE 
// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 
// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 
// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 
// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 
// OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
// DAMAGE.

using System;
using System.Collections.Generic;
using System.Drawing;
using System.Drawing.Imaging;
using System.Text;

using Interlace.AdornedPasteUp.Documents;

#endregion

namespace Interlace.AdornedPasteUp.Rendering
{
    public class PasteUpRenderer : IDisposable
    {
        Document _document;
        ImageLinkCache _cache;

        public PasteUpRenderer(Document document)
        {
            _document = document;
            _cache = new ImageLinkCache(_document.ImageLinkManager);
        }

        public Rectangle? PaintBounds
        {
            get
            {
                Rectangle? bounds = null;

                foreach (DocumentFrame frame in _document.Frames)
                {
                    if (!bounds.HasValue)
                    {
                        bounds = frame.PaintBounds;
                    }
                    else
                    {
                        bounds = Rectangle.Union(bounds.Value, frame.PaintBounds);
                    }
                }

                return bounds;
            }
        }
        
        public Bitmap Render()
        {
            Rectangle bounds = PaintBounds ?? new Rectangle(0, 0, 100, 100);

            Bitmap image = new Bitmap(bounds.Width, bounds.Height, PixelFormat.Format24bppRgb);

            try
            {
                using (Graphics g = Graphics.FromImage(image))
                {
                    g.FillRectangle(Brushes.White, new Rectangle(new Point(0, 0), bounds.Size));

                    g.TranslateTransform(-bounds.X, -bounds.Y);

                    using (DocumentPaintResources resources = new DocumentPaintResources(_cache))
                    {
                        foreach (DocumentFrame frame in _document.Frames)
                        {
                            frame.Paint(g, resources);
                        }
                    }
                }
            }
            catch 
            {
                image.Dispose();

                throw;
            }

            return image;
        }


        #region IDisposable Members

        public void Dispose()
        {
            _cache.Dispose();
        }

        #endregion
    }
}
